Astronomy Picture of the Day [1]Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2019 October 28 [2]See Explanation. Clicking on the picture will download the highest resolution version available. The Space Station Crosses a Spotless Sun Image Credit & Copyright: [3]Eduardo Schaberger Poupeau Explanation: Typically, the International Space Station is visible only at night. Slowly drifting across the night sky as it orbits the Earth, the [4]International Space Station (ISS) can be seen as a [5]bright spot about once a month from many locations. [6]The ISS is then visible only just after sunset or just before sunrise because it shines by reflected sunlight -- once the ISS enters the Earth's shadow, it will drop out of sight. The only occasion when the [7]ISS is visible during the day is when it [8]passes right in front of the Sun. Then, it passes so quickly that only cameras taking short exposures can visually freeze the [9]ISS's silhouette onto the background [10]Sun. The [11]featured picture did exactly that -- it is actually a series of images taken a month ago from [12]Santa Fe, [13]Argentina with perfect timing. This image series was later combined with a separate image highlighting the texture of the spotless Sun, and an image bringing up the [14]Sun's prominences around the edge. At an unusually low [15]Solar Minimum, the Sun has gone [16]without sunspots now for most of 2019. Follow APOD in English on: [17]Instagram, [18]Facebook, [19]Reddit, or [20]Twitter Tomorrow's picture: red robot __________________________________________________________________ [21]< | [22]Archive | [23]Submissions | [24]Index | [25]Search | [26]Calendar | [27]RSS | [28]Education | [29]About APOD | [30]Discuss | [31]> __________________________________________________________________ Authors & editors: [32]Robert Nemiroff ([33]MTU) & [34]Jerry Bonnell ([35]UMCP) NASA Official: Phillip Newman [36]Specific rights apply. [37]NASA Web Privacy Policy and Important Notices A service of: [38]ASD at [39]NASA / [40]GSFC & [41]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/1910/IssTransit_Poupeau_2406.jpg 3. https://www.facebook.com/astrofotografiarafaela/ 4. https://www.nasa.gov/mission_pages/station/main/index.html 5. https://apod.nasa.gov/apod/ap110314.html 6. https://spotthestation.nasa.gov/faq.cfm 7. https://apod.nasa.gov/apod/ap160513.html 8. https://apod.nasa.gov/apod/ap190715.html 9. https://apod.nasa.gov/apod/ap150912.html 10. https://solarsystem.nasa.gov/solar-system/sun/overview/ 11. https://www.facebook.com/astrofotografiarafaela/photos/a.407916176064535/1110171379172341/?type=3&theater 12. https://www.youtube.com/watch?v=ZIpceivSPY0 13. https://en.wikipedia.org/wiki/Argentina 14. https://apod.nasa.gov/apod/ap180618.html 15. https://science.nasa.gov/science-news/news-articles/solar-minimum-is-coming 16. https://www.spaceweatherlive.com/en/solar-activity/solar-cycle 17. https://www.instagram.com/astronomypicturesdaily/ 18. https://www.facebook.com/AstronomyPictureOfTheDay 19. https://www.reddit.com/r/apod 20. https://twitter.com/apod/ 21. https://apod.nasa.gov/apod/ap191027.html 22. https://apod.nasa.gov/apod/archivepix.html 23. https://apod.nasa.gov/apod/lib/apsubmit2015.html 24. https://apod.nasa.gov/apod/lib/aptree.html 25. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 26. https://apod.nasa.gov/apod/calendar/allyears.html 27. https://apod.nasa.gov/apod.rss 28. https://apod.nasa.gov/apod/lib/edlinks.html 29. https://apod.nasa.gov/apod/lib/about_apod.html 30. http://asterisk.apod.com/discuss_apod.php?date=191028 31. https://apod.nasa.gov/apod/ap191029.html 32. http://www.phy.mtu.edu/faculty/Nemiroff.html 33. http://www.phy.mtu.edu/ 34. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 35. http://www.astro.umd.edu/ 36. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 37. https://www.nasa.gov/about/highlights/HP_Privacy.html 38. https://astrophysics.gsfc.nasa.gov/ 39. https://www.nasa.gov/ 40. https://www.nasa.gov/centers/goddard/ 41. http://www.mtu.edu/